This example shows an instance of the WhereClause class (or one of its specializations) that defines a simple condition based on a single specified selection value. The example shown specifies that the value of the SAFFL variable in the ADSL dataset is equal to "Y", which could be expressed as ADSL.SAFFL EQ 'Y'. Note that some attributes (including such as the expected level and order attributes) have been excluded from this example.
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